The good thing is that they have a good second hand market too. I do not think you will look back and they are SOOOOO much safer than a trolley jack and axle stands.

If you take an engine and gearbox out of a car I would recommend ratchet strapping the car to the ramp though as my car was VERY light on the front with these removed and I think I could have easily pushed it off the back of the ramp.